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The slot property of the Element interface returns the name of the shadow DOM slot the element is inserted in.

A slot is a placeholder inside a web component that users can fill with their own markup (see Using templates and slots for more information).

Syntax

var aString = element.slot
element.slot = aString

Value

A DOMString.

Examples

In our simple-template example (see it live), we create a trivial custom element example called <my-paragraph> in which a shadow root is attached and then populated using the contents of a template that contains a slot named my-text.

When <my-paragraph> is used in the document, the slot is populated by a slotable element by including it inside the element with a slot attribute with the value my-text. Here is one such example:

<my-paragraph>
  <span slot="my-text">Let's have some different text!</span>
</my-paragraph>

In our JavaScript file we get a reference to the <span> shown above, then log a reference to the name of the corresponding <slot> element.

let slottedSpan = document.querySelector('my-paragraph span')
console.log(slottedSpan.slot); // logs 'my-text'

Specifications

Specification Status Comment
DOM
The definition of 'slot' in that specification.
Living Standard  

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 53.0 ? ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support No support 53.0 ? ? ? ? ? 53.0

Tag del documento e collaboratori

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